L. David Roper
6 April, 2016
Wind energy is an inflation-protected investment; it reduces electricity costs at the current rate instead of future rates. The economics of wind energy include:
The first thing you should do is make your house as energy-efficient as possible, so that renewable energy does not have to supply so much energy.
Several assumptions have to be made to calculate payback for small wind energy; here is an example:
There are some ephemeral situations that may reduce payback periods:
In the spreadsheet described below there are two worksheets; one for true cost and one for including ephemeral reductions.
To find out if there is enough wind at the chosen site, a wind study must be done. Here is a procedure to follow:
References for anemometers:
There is a downloadable Excel spreadsheet for doing the calculation. (The spreadsheet may be changed in the future, so you may want to download it again if you need it in the future.)
A Home Power Magazine study showed that, with reasonable assumptions, investing in green infrastructure for your home and business can return as much or more money savings as investing in the stock market earned over the last twenty years. And if enough information were available to calculate the money saved by not dumping carbon into the atmosphere, the energy-efficient investment would be even more favorable. This is a good time for U.S. citizens to buy products from companies to make their homes and businesses more energy efficient instead of buying stock in companies, which may go into increasing the salaries of executives. Make companies earn the money they receive from you by actually creating products you need for energy efficiency
As important as money payback are energy payback and carbon-emissions payback for solar PV systems. Some good references for these calculations are:
All of these calculations agree that the energy payback and carbon-emissions payback are 1-10 years.
L. David Roper interdisciplinary studies
Roper Global Warming
L. David Roper, http://www.roperld.com/personal/roperldavid.htm
6 April, 2016